U.S. patent number 8,079,108 [Application Number 12/429,178] was granted by the patent office on 2011-12-20 for cleaning system.
This patent grant is currently assigned to Hon Hai Precision Industry Co., Ltd.. Invention is credited to Chien-Feng Huang.
United States Patent |
8,079,108 |
Huang |
December 20, 2011 |
Cleaning system
Abstract
A cleaning system used for cleaning up plastic in a nozzle of a
molding apparatus, the nozzle including a nozzle opening and a
through hole connected with the nozzle opening, the plastic being
received in the through hole. The cleaning system includes a bottom
fixing sleeve, a top guiding sleeve and a knocking stick. The
bottom fixing sleeve is configured for securely fixing the nozzle.
The top guiding sleeve is configured for coupling with the bottom
fixing sleeve, and the top guiding sleeve includes a guiding hole
defined therein. The knocking stick is movable along the guiding
hole of the top guiding sleeve such that the knocking stick strikes
the plastic in a direction along the central axis of the through
hole of the nozzle.
Inventors: |
Huang; Chien-Feng (Taipei
Hsien, TW) |
Assignee: |
Hon Hai Precision Industry Co.,
Ltd. (Tu-Cheng, New Taipei, TW)
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Family
ID: |
41415024 |
Appl.
No.: |
12/429,178 |
Filed: |
April 23, 2009 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20090311360 A1 |
Dec 17, 2009 |
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Foreign Application Priority Data
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Jun 11, 2008 [CN] |
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2008 1 0302099 |
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Current U.S.
Class: |
15/104.05;
425/229; 425/DIG.51; 15/104.02; 15/104.16; 239/114; 239/123 |
Current CPC
Class: |
B29C
45/1753 (20130101); Y10S 425/051 (20130101) |
Current International
Class: |
B08B
9/027 (20060101) |
Field of
Search: |
;15/104.02,104.03,104.05,104.16 ;239/114,123,106,107
;425/227,229,DIG.51 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Spisich; Mark
Attorney, Agent or Firm: Altis Law Group, Inc.
Claims
What is claimed is:
1. A cleaning system, used for cleaning plastic in a nozzle of a
molding apparatus, the nozzle comprising a nozzle opening and a
through hole connected with the nozzle opening, the plastic being
received in the through hole, the through hole defining a first
central axis, the cleaning system comprising: a bottom fixing
sleeve configured for securely fixing the nozzle, and comprising
two flutes; a top guiding sleeve configured for coupling with the
bottom fixing sleeve, the top guiding sleeve comprising a guiding
hole defined therein and two flanges correspondingly arranged on an
end of the top guiding sleeve nearer to the bottom fixing sleeve;
and a knocking stick being movable along the guiding hole of the
top guiding sleeve such that the knocking stick strikes the plastic
in a direction along the first central axis of the through hole of
the nozzle; wherein the two flutes of the bottom fixing sleeve are
correspondingly arranged on an end of the bottom fixing sleeve
nearer to the top guiding sleeve, the two flanges are arranged
correspondingly to the two flutes and being tightly received in the
two flutes.
2. The cleaning system of claim 1, wherein the bottom fixing sleeve
comprises a receiving hole for receiving the nozzle, the receiving
hole defining a second central axis, the second central axis of the
receiving hole aligning with the first central axis of through hole
of the nozzle.
3. The cleaning system of claim 1, wherein the guiding hole defines
a third central axis, and the first central axis of the through
hole coincides with the third central axis of guiding hole.
4. The cleaning system of claim 1, wherein one end of the knocking
stick nearer to the bottom fixing sleeve is cone-shaped.
5. The cleaning system of claim 1, wherein the knocking stick is
made of copper.
6. A cleaning system, used for cleaning plastic in a nozzle of a
molding apparatus, the nozzle comprising a nozzle opening and a
through hole connected with the nozzle opening, the plastic being
received in the through hole, the through hole defining a first
central axis, the nozzle further comprising an enlarged portion at
end thereof, the cleaning system comprising: a bottom fixing sleeve
configured for securely fixing the nozzle, the bottom fixing sleeve
comprising an enlarged recessed portion at an end thereof and a
receiving hole in communication with the recessed portion, the
recessed portion being adapted to receive the enlarged portion of
the nozzle; a top guiding sleeve configured for coupling with the
bottom fixing sleeve, the top guiding sleeve comprising a guiding
hole defined therein, the enlarged portion of the nozzle being
fixed between the bottom fixing sleeve and the top guiding sleeve
when they are coupled to each other; and a knocking stick being
movable along the guiding hole of the top guiding sleeve, such that
the knocking stick strikes the plastic in a direction along the
first central axis of the through hole of the nozzle.
7. The cleaning system of claim 6, wherein the guiding hole defines
a third central axis, and the first central axis of the through
hole coincides with the third central axis of guiding hole.
8. The cleaning system of claim 7, wherein the receiving hole
defining a second central axis, the second central axis of the
receiving hole aligning with the first central axis of through hole
of the nozzle.
9. The cleaning system of claim 6, wherein the top guiding sleeve
comprises a receiving portion which includes a receiving cavity,
the guiding hole of the top guiding sleeve communicating with the
receiving cavity, the receiving cavity tightly receiving an end of
the bottom fixing sleeve nearer to the top guiding sleeve.
10. The cleaning system of claim 6, wherein the bottom fixing
sleeve comprises an annular protrusion that protrudes from an end
of the bottom fixing sleeve nearer to the top guiding sleeve, an
outer screw is arranged on an outer wall of an end of the top
guiding sleeve nearer to the bottom fixing sleeve, an inner screw
is arranged on an inner wall of the annular protrusion of the
bottom fixing sleeve, the inner screw couples with the outer screw
to make the top guiding sleeve and the bottom fixing sleeve be
tightly fixed to each other.
11. The cleaning system of claim 6, wherein the bottom fixing
sleeve comprises two flutes arranged on an end of the bottom fixing
sleeve nearer to the top guiding sleeve, the top guiding sleeve
comprises two flanges arranged on an end of the top guiding sleeve
nearer to the bottom fixing sleeve, the two flanges are arranged
correspondingly to the two flutes and are tightly received in the
two flutes.
12. The cleaning system of claim 6, wherein the bottom fixing
sleeve comprises two flanges arranged on an end of the bottom
fixing sleeve nearer to the top guiding sleeve, the top guiding
sleeve comprises two flutes arranged on an end of the top guiding
sleeve nearer to the bottom fixing sleeve, the two flanges are
arranged correspondingly to the two flutes and are tightly received
in the two flutes.
Description
BACKGROUND
1. Technical Field
The present invention relates to molding apparatuses, and
particularly to a cleaning system for cleaning the nozzle of a
molding apparatus.
2. Description of Related Art
Molding apparatuses are widely used for manufacturing optical
components, such as light guide plates, lenses, etc.
Referring to FIG. 5, a nozzle 10, of an injection molding machine,
can sometimes be blocked by the material being molded such as
plastic material 12. The plastic material 12 may be lodged during
the injection process and will adhere to the inner wall 14 of the
nozzle 10 while cooling down, making it difficult to clean the
nozzle. Usually a dowel 16 can be used for cleaning up the plastic
material 12. However, the nozzle 10 may be easily damaged by the
dowel 16.
Therefore, a new cleaning system is desired to overcome the problem
described above.
BRIEF DESCRIPTION OF THE DRAWINGS
Many aspects of the present cleaning system can be better
understood with reference to the following drawings. The components
in the drawings are not necessarily to scale, the emphasis instead
being placed upon clearly illustrating the principles of the
present cleaning system. Moreover, in the drawings, like reference
numerals designate corresponding parts throughout the several
views.
FIG. 1 is a cross-sectional view of a cleaning system according to
a first embodiment.
FIG. 2 is a cross-sectional view of a cleaning system according to
a second embodiment.
FIG. 3 is a cross-sectional view of a cleaning system according to
a third embodiment.
FIG. 4 is a cross-sectional view of a cleaning system according to
a fourth embodiment.
FIG. 5 is a cross-sectional view of a typical nozzle of a molding
apparatus.
DETAILED DESCRIPTION
Reference will now be made to the drawings to describe in detail of
the exemplary embodiments of the cleaning system.
Referring to FIG. 1, a cleaning system 200, in accordance with a
first embodiment, includes a top guiding sleeve 20, a bottom fixing
sleeve 22 and a knocking stick 24. The cleaning system 200 is used
for cleaning up plastic 29 in a nozzle 27 of an injection molding
machine (not shown). The nozzle 27 includes a nozzle opening 28 and
a through hole 26 connected with the nozzle opening 28. The plastic
29 is received in the through hole 26, and the through hole 26
defines a first central axis l. The top guiding sleeve 20 is
configured for coupling with the bottom fixing sleeve 22. The
bottom fixing sleeve 22 is configured for securely fixing and
receiving the nozzle 27.
The bottom fixing sleeve 22 includes a receiving hole 222 for
receiving the nozzle 27. The receiving hole 222 defines a second
central axis l'. The second central axis l' coincides with the
first central axis l of the through hole 26 of the nozzle 27.
The top guiding sleeve 20 includes a guiding hole 202 and a
receiving portion 220. The receiving portion 220 includes a
receiving cavity 204. The guiding hole 202 communicates with the
receiving cavity 204, and the guiding hole 202 allows the knocking
stick 24 to pass therethrough. The receiving cavity 204
communicates with the receiving hole 222 of the bottom fixing
sleeve 22. One end of the bottom fixing sleeve 22 adjacent to the
top guiding sleeve 20 is tightly received in the receiving cavity
204 of the top guiding sleeve 20. The guiding hole 202 defines a
third central axis n, and the first central axis l of the through
hole 26 coincides with the third central axis n of guiding hole
202.
The knocking stick 24 is movable along the guiding hole 202 of the
top guiding sleeve 20 such that the knocking stick 24 strikes the
plastic 29 in a direction along the first central axis l of the
through hole 26 of the nozzle 27.
In operation, the knocking stick 24 is guided through the guiding
hole 202 and the receiving cavity 204 of the top guiding sleeve 20
and impacts the plastic 29. The knocking stick 24 can be guided by
the guiding hole 202 of the top guiding sleeve 20, such that the
knocking stick 24 will impact the plastic 29 only in a direction
along the first central axis l of the through hole 26 of the nozzle
27, such that the nozzle gate 28 will not be damaged by the
knocking stick 24. In the present embodiment, the end of the
knocking stick 24 that is inserted in the bottom fixing sleeve 22
is cone-shaped which makes it easier to loosen the plastic 29. The
knocking stick 24 can be made of copper or other metallic
materials. The nozzle 27 can be made of stainless steel or other
metallic materials with highly rigidity. Such that when the copper
knocking stick 24 with less rigidity than the stainless steel
nozzle 27 impacts the nozzle gate 28, it will not damage the nozzle
gate 28.
The receiving portion 220 of the top guiding sleeve 20 can further
include an inner screw arranged on the inner wall thereof. One end
of the bottom fixing sleeve 22 received in the receiving cavity 204
of the top guiding sleeve 20 can further include an outer screw
arranged on the outer wall thereof. The top guiding sleeve 20 and
the bottom fixing sleeve 22 can be threadedly coupled to each other
via the inner screw and the outer screw.
Referring to FIG. 2, a cleaning system 200a, in accordance with a
second embodiment, is provided. The cleaning system 200a is similar
to the cleaning system 200 except that the bottom fixing sleeve 22a
of the cleaning system 200a includes an annular protrusion 324
protruding from an end of the bottom fixing sleeve 22a adjacent to
the top guiding sleeve 20a. The bottom fixing sleeve 22a includes a
receiving portion 220a. The diameter of the annular protrusion 324
is larger than that of the receiving portion 220a. The top bottom
guiding sleeve 20a includes a guiding hole 202a that can let the
knocking stick 24a pass through. Outer screw threads 205 is
arranged on the outer wall of the end of the top guiding sleeve 20a
nearer to the bottom fixing sleeve 22a, and inner screw threads 206
is arranged on the inner wall of the annular protrusion 324 of the
bottom fixing sleeve 22a, such that the inner screw threads 206 is
coupled with the outer screw threads 205 to make the top guiding
sleeve 20a and the bottom fixing sleeve 22a be tightly fixed to
each other. The central axis of the guiding hole 202a aligns with
the central axis of the through hole 26a.
Referring to FIG. 3, a cleaning system 200b, in accordance with a
third embodiment, is provided. The cleaning system 200b is similar
to the cleaning system 200 except that the bottom fixing sleeve 22b
of the cleaning system 200b includes two flutes 420, 422
correspondingly arranged on an end of the bottom fixing sleeve 22b
nearer to the top guiding sleeve 20b. The top guiding sleeve 20b of
the cleaning system 200b includes two flanges 424, 426
correspondingly arranged on the end of the top guiding sleeve 20b
nearer to the bottom fixing sleeve 22b. The two flanges 424, 426
are arranged correspondingly to the two flutes 420, 422 and are
tightly received in the two flutes 420, 422, thus the top guiding
sleeve 20b is tightly fixed to the bottom fixing sleeve 22b. It
should be understood that the number of the flutes or the flanges
can be more than two.
Referring to FIG. 4, a cleaning system 200c, in accordance with a
fourth embodiment, is provided. The cleaning system 200c is similar
with the cleaning system 200b except that the top guiding sleeve
20c of the cleaning system 200c includes two flutes 420c, 422c
correspondingly arranged on the end of the top guiding sleeve 20c
that nearer to the bottom fixing sleeve 22c. The bottom fixing
sleeve 22c of the cleaning system 200c includes two flanges 424c,
426c correspondingly arranged on the end of the bottom fixing
sleeve 22c that nearer to the top guiding sleeve 20c. The two
flanges 424c, 426c are arranged correspondingly to the two flutes
420c, 422c and are tightly received in the two flutes 420c, 422c,
thus the top guiding sleeve 20c is tightly fixed to the bottom
fixing sleeve 22c. It should be understood that the number of the
flutes or the flanges can be more than two.
While the present invention has been described as having preferred
or exemplary embodiments, the embodiments can be further modified
within the spirit and scope of this disclosure. This application is
therefore intended to cover any variations, uses, or adaptations of
the embodiments using the general principles of the invention as
claimed. Further, this application is intended to cover such
departures from the present disclosure as come within known or
customary practice in the art to which the invention pertains and
which fall within the limits of the appended claims or equivalents
thereof.
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